Username Enumeration

web-auth/webauthn-framework and web-auth/webauthn-lib are vulnerable to Username Enumeration. The vulnerability is due to the ProfileBasedRequestOptionsBuilder method returning allowedCredentials without any credentials if no username was found. This allows an attacker to enumerate valid username...

CVE-2024-39912 Enumeration of valid usernames in web-auth/webauthn-lib

web-auth/webauthn-lib is an open source set of PHP libraries and a Symfony bundle to allow developers to integrate that authentication mechanism into their web applications. The ProfileBasedRequestOptionsBuilder method returns allowedCredentials without any credentials if no username was found...

CVE-2024-39912

CVE-2024-39912 affects web-auth/webauthn-lib (PHP/Symfony) where ProfileBasedRequestOptionsBuilder returns allowedCredentials without credentials if no username is found, enabling username enumeration when WebAuthn is used as the first/only authentication method. Documented impact is enumeration ...